一种基于二进制频移键控的无线电能与数据并行传输的新型调制解调方法。

A Novel Modulation and Demodulation Method Based on Binary Frequency Shift Keying for Wireless Power and Data-Parallel Transmission.

作者信息

Liu Peizhou, Gao Tiande, Zhao Ruixuan, Mao Zhaoyong, Zhu Quanzhe

机构信息

School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China.

Xi'an Precision Machinery Research Institute, Xi'an 710076, China.

出版信息

Micromachines (Basel). 2022 Aug 24;13(9):1381. doi: 10.3390/mi13091381.

DOI:10.3390/mi13091381

PMID:36144004

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9502106/

Abstract

It is usually necessary but difficult to achieve reliable communication between the primary side and pick-up side in the wireless power transfer (WPT) system due to magnetic interferences. In this paper, a novel parallel transmission method for wireless power and data is proposed, which is based on the frequency shift keying (FSK) modulation and demodulation. The data are transmitted by changing the working frequency of the inverter and then demodulated based on the phase-locked loop (PLL) technology. In this way, the signal before the rectifier circuit for the data demodulation can overcome the influence of power transmission on the data transmission. Finally, a 426 W prototype has been built to verify the effectiveness of the proposed transmission method. The experimental results showed that when the output power changed from tens of watts to hundreds of watts, the data transmission was capable of achieving a stable transmission with a 10 kbps baud rate.

摘要

在无线电力传输（WPT）系统中，由于磁干扰，在原边和接收边之间实现可靠通信通常是必要的，但却很困难。本文提出了一种基于频移键控（FSK）调制与解调的无线电力和数据并行传输新方法。通过改变逆变器的工作频率来传输数据，然后基于锁相环（PLL）技术进行解调。这样，用于数据解调的整流电路之前的信号就能克服电力传输对数据传输的影响。最后，搭建了一个426W的原型来验证所提传输方法的有效性。实验结果表明，当输出功率从几十瓦变化到几百瓦时，数据传输能够以10kbps的波特率实现稳定传输。